unpredictability

noun

un·​predictability "+ How to pronounce unpredictability (audio)
Synonyms of unpredictabilitynext
: the quality or state of being unpredictable
the characteristic of the kaleidoscope is unpredictabilityMargery Sharp

Word History

First Known Use

1878, in the meaning defined above

Time Traveler
The first known use of unpredictability was in 1878

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

  1. Expanded definitions
  2. Detailed etymologies
  3. Advanced search tools
  4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now

Browse Nearby Words

Cite this Entry

“Unpredictability.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unpredictability. Accessed 13 Dec. 2025.

More from Merriam-Webster on unpredictability

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!